page_title: Guadiana
hierarchical_section_title: Guadiana
caption_attribution_description: Français&#160;: carte réalisée sur umap [1] This map was created from OpenStreetMap project data, collected by the community. This map may be incomplete, and may contain errors. Don't rely solely on it for navigation.
context_page_description: The Guadiana River, or Odiana, is an international river defining a long stretch of the Portugal-Spain border, separating Extremadura and Andalucia from Alentejo and Algarve. The river's basin extends from the eastern portion of Extremadura to the southern provinces of the Algarve; the river and its tributaries flow from east to west, then south through Portugal to the border towns of Vila Real de Santo António and Ayamonte, where it flows into the Gulf of Cádiz. With a course that covers a distance of 829 kilometres, it is the fourth-longest in the Iberian peninsula, and its hydrological basin extends over an area of approximately 68,000 square kilometres.
context_section_description: The Guadiana River (/ˌɡwɑːdiˈɑːnə/, also US: /ɡwɑːdˈjɑːnə/, Spanish: [ɡwaˈðjana], Portuguese: [ɡwɐðiˈɐnɐ]), or Odiana, is an international river defining a long stretch of the Portugal-Spain border, separating Extremadura and Andalucia (Spain) from Alentejo and Algarve (Portugal). The river's basin extends from the eastern portion of Extremadura to the southern provinces of the Algarve; the river and its tributaries flow from east to west, then south through Portugal to the border towns of Vila Real de Santo António (Portugal) and Ayamonte (Spain), where it flows into the Gulf of Cádiz. With a course that covers a distance of 829 kilometres (515 mi), it is the fourth-longest in the Iberian peninsula, and its hydrological basin extends over an area of approximately 68,000 square kilometres (26,000 sq mi) (the majority of which lies within Spain).
caption: About 83 percent, 55,000 square kilometres (21,000 sq mi), of the River Guadiana watershed is in Spain; the rest is in Portugal (interactive map)
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